Typewriting machine



1,635,672 July 12, 1927. B. HESS TYPEWRITING MACHINE Filed March 28. 1925 I5 Sheets-Sheet l July 12, 1927.- E. B. HESS TYPEWRITING MACHINE Filed March 28. 1925 s Sheets-Sheet 2 July 12, 1927.

E. B. ess

T YPEWRITING MACHINE Filed March" 2 1925 3 Sheets-Sheet 1H his 145507: 8

Patented July 12, 1927.

UNITED STATES- A 1,635,672 PATENT OFFICE.

EDWARD B. HESS, NEW YORK, N. Y., ASSIGNOR TOROYAL PEWRITEB COMPANY, INC., OFN'EW YORK, N. Y., A CORPORATION OF NEW YORK.

TYPE'WBII ITING MACHINE.

' Application filed latch 28, 1925. Serial No. 19,085.

Particularly in -the manufacture of small portable machines it has been the general practice to employ a rather skeletonized frame wherein arts such as the ribbon spool which are usua y made of sheet metal project into positions where they can be easily damaged in the use of the machine. Furthermore there has not been adequate protection for 'thepivot's of the type bars, their links and other'moving parts against dust and dirt.v

' The inventon herein disclosed is intended tofprovide a mask or. enclosing frame, particularly for machines of this -character,,

which is constructed entirely independent of the main frame which supports the elements of the typewriting machine, and is ada ted to bemoved into position and fastene to said main frame. This mask protects the ribbon s ools and other instrumentalities from accidental bending or breakage;

Another object of the invention 1s to provide such'a mask which will rotect the va rious pivots of'the. ty e action from dust and dirt, and in genera tend to prevent entry of extraneous matter to the interior of the machine.

A further object of the invention is to provide amask which will be'ornamental in a a0 pearance and when in position will give t e machine a very leasing ap earance, rendering it very simi ar to stan ard machines so far as the outward appearance is concerned. A still further object is to construct such a mask of; sheet metal and of a few pieces which can be assembled in itssubstantial entiret before'being placed'in position on the mac ine.

Further objects of'the invention will be apparent from the following detailed description' and the appended clalms.

In the drawings:

, Figure 1 is a top plan view' of a typewriting machine with the mask or protecting frame in'position. 1

Figure 2 is a similar View .on a larger scale of one side of the machine particularly showing the dust sheds for the type bar P v t Figure 3-is a perspective view of one portion'of the mask showing the part adjacent the ribbon spools and the rear of the keyboard and also illustrating the detached dust sheds for the type'bar pivots.

Figure 4 is a perspective view of that pertion of the mask which surrounds the sides, front and rearof the machine.

Figure 5 is a perspective view of the whole mask in the assembled form in which it appears when positioned on the machine.

The invention-is illustrated as applied to the Royal portable machine, but obviously in many features it is applicable to other machines of the same general type or character. There are shown supported by a main frame, the usualinstrumentalities of a t pewrit-ing machine including the keyboard A type bar segment B, type bars I) pivoted therein, t pe bar guide 0, platen D and ribbon spoo s E. These parts in and of themselves, foi'm no part of the present invention.

The portion of the mask or protecting frame shown in Figure 3 which encloses the upper front portion of the machine is made of sheet metal and preferably built up owing to the difficulty and expense of stamping it from a single piece of sheet metal. It comprises two members 1 and 2, each havin a side portion 3 and a front portion 4, pre erably formed with'panels. A top 5 is con nected to the portions 3 and 4 and surrounds the side, front and a ortion of the rear of the ribbon spool E. his to lies in a plane slightly above the top of the ribbon spool and preserves the latter from injury. It also provides a suitable rest for the arm or hand of the typist when making erasures. The sides 3 and fronts 4 are referably provided with panels Sand 7 or thee eke of improved appearance.

plane strip 8 havin a vertical flange 9 connects thetwo mem rs 1 and 2 and the arealso connected by a curved portion 10 1nclined slightly toward the rear from the vertical and havi their ends curved rearwardly and engaging the inner side of the members 1 and 2. These parts 8, 9 and 10 serve'as dust guards particularly for the pivots of the front links of the type action and for the type bar heads.

The rtion of the mask or protecting frame s own in Figure 4 is formed of two pieces. The sides 11 and front 12 are stamped out of a single piece ofmetal into the form shown. The front is narrower than the sides and the upper edge 13 of the connecting part at see side as well as the upper edge of the front 12 is rolled or beaded as shown. The bottom of the front has an inturned flange 14 which extends rearwardly tened to the rear ends of the sides 11 by fastenings indicated at 18. 'Two forwardly projecting ortions 19 of the plate 17 cover the rear 0 the lower part of the machine except for a small space at the center and serve as dust guards for portions of the machine in the rear of the type bar pivots.

In assembling the two main ortions of the mask shown in Figures 3 an 4 into the complete form shown in Figure 5, the side portions 3 engage the outside of the flanges 16 and are attached thereto by appropriate fastenings passin through the openings 20 in the sides 3 an the registering o nings 21 in the flanges 16. This results in t e sides 3 being slightly inset from the sides 11 of the lower portion, but the strip 8 and flange 9 extend outwardly to the sides 11.

When the completed mask is positioned on the machine, it is fastened to the main frame by screws or other fastenings passing through the openings 22 in the flange 9 and openings 23 in the sides 11. The completed mask as shown in Figure 5 can be placed on the machine by removing the rear plate 17, sliding the mask into sition, fastening it to the frame and attac ing the rear plate 17. Or the machine may be dropped into position in the lower portion of the mask and the upper portion then attached thereto. The precise method of assembly is immaterial so far as the invention is concerned.

The members 24 appearing in Fi 2, 3 and 5-are not a part of the mask, hilt are type bar dust guards attached to the type bar segment and adapted to protect the type bar pivots. They may be continuously curved or upwardly inclined members which ta towards the ends adjacent the ty ar guide. Either form is found especl desirable in small compact machmes of the present type.

It is obvious that numerous detail changes may be made in the recise embodiment without in any way eparting from the spirit of the invention which is to be regarded as limited only by the scope of the appended claims.

I claim as my invention:

1. A protecting mask for typewriting machines comprising a lower ortion ada ted to encase the sides. rear an extreme ent portion of the machineirame, and an upper portion carrying ribbon housings, said parts being structurall independent of the frame of the machine utadapted to be attached thereto.

2. A protecting mask for typewriting machines comprising a lower portion ada ted to encase the lower portion of the mac ine frame, an upper portion carrying ribbon housings, and a dust guard element connecting said housings at the front, said parts being structurally independent of the frame of the machine but adapted to be attached thereto.

3. A protecting maskfor typewriting machines comprising ribbon spool housings which partially encase said spools but rise above the tops thereof, a dust guard element for the type bar heads when at rest and connecting the housings, and a lower dust guard element for a art of the type action, said lower element ing connected to the housing's and upper dust guard element and extending forwardly and downwardl therefrom, said parts being structura y independent of the frame of the machine but adapted to be attached thereto.

4. A protecting mask for typewriting machines comprising a lower portion having an open back and stamped from sheet metal and having sides connected with a narrow front portion by inclined portions having rolled upper edges, said ,lower portion also having an inwardly extending bottom flan along the front and adjacent portion of t e sides, said parts being structurally independent of the frame of the machine but adapted to be attached to the complete machine.

5. A protecting mask for typewriting machines com rising an upper unitary portion having rib on s 01 housings, a dust guard connecting said ousings and having a plain portion with down-turned flange, and an upr dust guard element for the type bar eads also connectin said housings and having its ends curv rearwardly said portion being structurally inde en ent of the frame of the machine but a apted to be attached thereto.

6. In a typewriting machine, a pair of dust guards, each guard comprising a plate attached at is outer end to the type segment and risin upwardly and tapering inwardly towards t e t guide.

7. A protectmg mask for a t pewriting machine comprising portions at t 0 side and top of the machine frame adapted to revent the entry of extraneous matter into t e interior of the machine, a front portion protecting the pivots of the type bar actions, and a pair of dust guards located in the rear of said front portion and over the type bar pivots; in connection with a air of dust guards located at the rear of t e typewritm machine, and parts bemg structurally independent of the rame of the machine but adapted to be attached thereto.

mg mask for typewriting machines comprising a lower portion havin an open back and stam edfrom sheet meta said portion having si es connected with a narrow front portion by inclined portions having rolled upper edges, said lower ortionalso having an inwardly extending ttom flange along the front and adjacent portion of the sides, said parts being structurallyindependent of the frame of the machine but adapted to be attached to the complete machine, and a back adapted tobe at tached to the sides and having a top dust guard carried thereby. i

9. In a typewriting machine having a platen and ribbon spools, a protecting mask 8, A protect' having housings for said spools which lie in a plane slightly above the plane of the tops of the ribbon spools and do not overlie said spools, dust guard elements for the heads of t e type bars and for the ivots of the type bar sections connecting sai ribbon housings, the top of the platen and the housings lying in substantially the same horizontal plane and the housings actin as rests for the hand in making erasures, t e mask being structurally independent of the frame of the machine but adapted to be attached thereto.

In testimony whereof, I have hereunto subscribed my name.

EDWARD B. HESS. 

